Steering Head Bearing Check/Adjustment

Journeyman

"And this one is just right" ~ Goldilocks
Joined
Aug 13, 2017
Messages
2,562
Location
Old Fort, NC 28762 USA
Ride
2020 3R
I was feeling a click when I'd come to a stop and then let off the front brake. I wasn't sure if it was a sticky caliper or the steering head bearing/adjustment. After lifting the bike and rocking the front end back and forth holding the forks I could feel it, so guessing it must be the bearing.

To adjust it you need the special Triumph T3880750 Headstock Service Tool ($33)

As with everything on the 2.5s getting to where you want to go involves removing a lot of unrelated "stuff." You have to remove the display, handlebars, windscreen and cover, and upper yoke to get to the adjustment nut. Just time consuming, but not especially difficult.

I used the tool to loosen the adjustment nut and re-torque it and it feels like it may have resolved the issue. My guess is that when I went down several months ago it may have jarred the lock nut loose enough to allow the adjustment nut to back off just a bit. If not, I may be looking at a new set of bearings. I'll update if that is the case.

Here's some ugly photos for anyone curious about the procedure that is outlined in the manual....

BlakeMaddenPhotography-5137.jpg

BlakeMaddenPhotography-5139.jpg

Leave the handlebars on until you've removed the handlebar supports, but I don't think that is really necessary (removing the supports) despite what the manual says.
BlakeMaddenPhotography-5140.jpg

You unclip some connections here to allow you to pull the handlebars away, as seen below....
BlakeMaddenPhotography-5142.jpg

BlakeMaddenPhotography-5145.jpg


I used a rubber mallet and wooden block to encourage the upper yoke to come off. Dropping the forks completely would be another option.

BlakeMaddenPhotography-5146.jpg

Here's the required tool. The final torque on the adjustment nut is just 15 Nm.

The top nut (visible under the display) is 90 Nm and takes a 38mm socket.


BlakeMaddenPhotography.jpg
 

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Here's the required tool. The final torque on the adjustment nut is just 15 Nm.

i do not know but
are you sure that tighten it then back it off?
 
Holy bloody hell.:oops:
Whaaa? Oh, I guess everything in pieces.
🤓

If it's the numbers maybe (?) this will clear things up...

There are three nuts involved. Going from the bottom up...
Adjustment nut- tighten to 45Nm, loosen, then tighten to 15Nm
Lock nut- tighten to 45Nm
Top Cap- tighten to 90 Nm

Screenshot 2024-06-04 at 9.40.02 PM.png
 
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Good thread. Is there any test to see how many cycles the forks make from release? Far left, release.... should bounce back from right so much. Far right, release...etc

Also, an easy time time to flip the flacid display. That pictorial would work for the procedure. Except for trimming that one small tab.
 
Good thread. Is there any test to see how many cycles the forks make from release? Far left, release.... should bounce back from right so much. Far right, release...etc

Also, an easy time time to flip the flacid display. That pictorial would work for the procedure. Except for trimming that one small tab.

Thanks

I'm not familiar with the release test, but I'm just over 30K and will be rebuilding the forks very soon.

Btw, the clicking seems to have gone away- just based on one quick test ride.

I remember your mentioning in another post that you had done something to move the display to a different angle. Mine stays put where I want it and, so far, happy with the stock range of motion.
 
Whaaa? Oh, I guess everything in pieces.
🤓

If it's the numbers maybe (?) this will clear things up...

There are three nuts involved. Going from the bottom up...
Adjustment nut- tighten to 45Nm, loosen, then tighten to 15Nm
Lock nut- tighten to 45Nm
Top Cap- tighten to 90 Nm

Screenshot 2024-06-04 at 9.40.02 PM.png
Buddy if I need this done I’ll invite you over for grilled fillets, lobster salad and the beer of your choice. :thumbsup:
 
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